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What do you mean by cloud federation stack

What do
you mean by cloud federation stack?

ANS: Federation stack: Cloud federation
requires one provider to wholesale or rent computing resources to another cloud
provider. Those resources become a temporary or permanent extension of the
buyer's cloud computing environment, depending on the specific federation
agreement between providers. Cloud federation offers two substantial
benefits to cloud providers. First, it allows providers to earn revenue from
computing resources that would otherwise be idle or underutilized. Second,
cloud federation enables cloud providers to expand their geographic footprints
and accommodate sudden spikes in demand without having to build new
points-of-presence
(POPs).

Fig. Cloud Federation
Stack

Cloud Federation refers to the unionization of
software, infrastructure and platform services from disparate networks
that can be accessed by a client via the internet. The federation of cloud
resources is facilitated through network gateways that connect public or
external clouds, private or internal clouds (owned by a single entity) and/or
community clouds (owned by several cooperating entities); creating a hybrid
cloud computing environment. It is important to note that federated cloud
computing services still rely on the existence of physical data centers.

Advantages

The federation of cloud resources allows clients to optimize
enterprise IT service delivery.

The federation of cloud resources allows a client to choose the
best cloud services provider, in terms of flexibility, cost and availability of
services, to meet a particular business or technological need within their
organization.

Federation across different cloud resource pools allows
applications to run in the most appropriate infrastructure environments.

The federation of cloud resources also allows an enterprise to
distribute workloads around the globe, move data between disparate networks and
implement innovative security models for user access to cloud resources.